linux as router

[Adel ESSAFI]

Hi list
This is the first time I have to configure linux as router.
I have a single network card for which I gave to IPs

eth0      Link encap:Ethernet  HWaddr 00:11:5B:72:7F:D9
          inet addr:41.231.X.Y  Bcast:41.255.255.255  Mask:255.255.255.0
          inet6 addr: fe80::211:5bff:fe72:7fd9/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:2595 errors:0 dropped:0 overruns:0 frame:0
          TX packets:2295 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:1876353 (1.7 MiB)  TX bytes:328059 (320.3 KiB)
          Interrupt:21 Base address:0x8000

eth0:1    Link encap:Ethernet  HWaddr 00:11:5B:72:7F:D9
          inet addr:192.168.10.10  Bcast:192.168.10.255  Mask:255.255.255.0
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          Interrupt:21 Base address:0x8000




and this is the default route

[root at routeur ~]# route
Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use
Iface
41.231.2.0      *               255.255.255.0   U     0      0        0 eth0
192.168.10.0    *               255.255.255.0   U     0      0        0 eth0
link-local      *               255.255.0.0     U     1002   0        0 eth0
default         41.231.2.81     0.0.0.0         UG    0      0        0 eth0


The problem now, is when I configure a PC with an IP adress 192.168.10.X
and I put the gateway as 192.168.10.10, I do not succeed to ping any PC. How
can I route all the packages from eth0:1 to eth0??


note that I have configured the ip forward.

echo 1> /proc/sys/net/ipv4/ip_forward

Can you help me please.

regards





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